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      09-10-2012, 03:32 PM   #16
hetzle
First Lieutenant
 
Drives: E90 335i
Join Date: Dec 2011
Location: Los Altos, California

Posts: 326
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N54 will make more power with the same mods at this point in time. I much prefer the sound of the N55 over N54 though, so much deeper and less raspy
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2011 335i sedan 6MT, JB4 w/FlexFuel wires, AA 4" DP, VRSF 7" FMIC, AA turbo-back exhaust, UUC DSSR+SSK, ER CP, BMS CDV, BMS OCC, Arkym CF trunk
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